PHP get_headers() 替代方案

发布于 2024-11-09 03:36:40 字数 234 浏览 5 评论 0原文

我需要一个 PHP 脚本来读取每个 URL 请求的 HTTP 响应代码。

类似的

$headers = get_headers($theURL);
return substr($headers[0], 9, 3);

问题是 get_headers() 函数作为一项策略在服务器级别被禁用。所以它不起作用。

问题是如何获取 URL 的 HTTP 响应代码？

原文

I need a PHP script that reads the HTTP response code for each URL request.

something like

$headers = get_headers($theURL);
return substr($headers[0], 9, 3);

The problem is the get_headers() function is disabled at server level, as a policy.So it doesn't work.

The question is how to get the HTTP response code for a URL?

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赢得她心 2024-11-16 03:36:40

如果启用了 cURL，您可以使用它来获取整个标头或仅获取响应代码。以下代码将响应代码分配给 $response_code 变量：

$curl = curl_init();
curl_setopt_array( $curl, array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_URL => 'http://stackoverflow.com' ) );
curl_exec( $curl );
$response_code = curl_getinfo( $curl, CURLINFO_HTTP_CODE );
curl_close( $curl );

要获取整个标头，您可以发出 HEAD 请求，如下所示：

$curl = curl_init();
curl_setopt_array( $curl, array(
    CURLOPT_HEADER => true,
    CURLOPT_NOBODY => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_URL => 'http://stackoverflow.com' ) );
$headers = explode( "\n", curl_exec( $curl ) );
curl_close( $curl );

If cURL is enabled, you can use it to get the whole header or just the response code. The following code assigns the response code to the $response_code variable:

$curl = curl_init();
curl_setopt_array( $curl, array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_URL => 'http://stackoverflow.com' ) );
curl_exec( $curl );
$response_code = curl_getinfo( $curl, CURLINFO_HTTP_CODE );
curl_close( $curl );

To get the whole header you can issue a HEAD request, like this:

$curl = curl_init();
curl_setopt_array( $curl, array(
    CURLOPT_HEADER => true,
    CURLOPT_NOBODY => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_URL => 'http://stackoverflow.com' ) );
$headers = explode( "\n", curl_exec( $curl ) );
curl_close( $curl );

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一身软味 2024-11-16 03:36:40

如果可以，请使用 HttpRequest： https://www.php.net/manual/ en/class.httprequest.php

$request = new HttpRequest("http://www.example.com/");
$request->send();
echo $request->getResponseCode();

或者用困难的方法：https://www.php.net/manual/en/function.fsockopen.php

$errno = 0;
$errstr = "";

$res = fsockopen('www.example.com', 80, $errno, $errstr);

$request = "GET / HTTP/1.1\r\n";
$request .= "Host: www.example.com\r\n";
$request .= "Connection: Close\r\n\r\n";

fwrite($res, $request);

$head = "";

while(!feof($res)) {
    $head .= fgets($res);
}

$firstLine = reset(explode("\n", $head));
$matches = array();
preg_match("/[0-9]{3}/", $firstLine, $matches);
var_dump($matches[0]);

Curl 可能也是一个不错的选择，但最好的选择是击败你的管理员;)

Use HttpRequest if you can: https://www.php.net/manual/en/class.httprequest.php

$request = new HttpRequest("http://www.example.com/");
$request->send();
echo $request->getResponseCode();

Or do it the hard way: https://www.php.net/manual/en/function.fsockopen.php

$errno = 0;
$errstr = "";

$res = fsockopen('www.example.com', 80, $errno, $errstr);

$request = "GET / HTTP/1.1\r\n";
$request .= "Host: www.example.com\r\n";
$request .= "Connection: Close\r\n\r\n";

fwrite($res, $request);

$head = "";

while(!feof($res)) {
    $head .= fgets($res);
}

$firstLine = reset(explode("\n", $head));
$matches = array();
preg_match("/[0-9]{3}/", $firstLine, $matches);
var_dump($matches[0]);

Curl may be also a good option, but the best option is to beat your admin ;)

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